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Vulkan-CTS-bin/vulkan/amber/graphicsfuzz/cov-nested-loops-array-choose-red-last-iteration.amber
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kbz_8 fd7038b853 yes
2026-05-06 23:44:13 +02:00

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#!amber
# Copyright 2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# A test for a coverage-gap found by the GraphicsFuzz project.
# Short description: A fragment shader that covers specific LLVM code paths
# The test passes because the shader always writes red.
# Optimized using spirv-opt with the following arguments:
# '-O'
# spirv-opt commit hash: a0370efd589be33d5d9a85cfde2f85841b3755af
SHADER vertex variant_vertex_shader PASSTHROUGH
# variant_fragment_shader is derived from the following GLSL:
# #version 320 es
#
# #define _int_4 _GLF_uniform_int_values[0]
# #define _int_0 _GLF_uniform_int_values[1]
# #define _int_1 _GLF_uniform_int_values[2]
# #define _float_1_0 _GLF_uniform_float_values[0]
# #define _float_0_0 _GLF_uniform_float_values[1]
#
# precision highp float;
# precision highp int;
#
# // Contents of _GLF_uniform_float_values: [1.0, 0.0]
# layout(set = 0, binding = 0) uniform buf0
# {
# float _GLF_uniform_float_values[2];
# };
#
# // Contents of _GLF_uniform_int_values: [4, 0, 1]
# layout(set = 0, binding = 1) uniform buf1
# {
# int _GLF_uniform_int_values[3];
# };
#
# // Contents of injectionSwitch: [0.0, 1.0]
# layout(set = 0, binding = 2) uniform buf2
# {
# highp vec2 injectionSwitch;
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
# // Always false.
# if(injectionSwitch.x > injectionSwitch.y)
# {
# _GLF_color = vec4(_float_1_0);
# }
#
# for(int i = _int_0; i < _int_4; i ++)
# {
# // Iterates once.
# do
# {
# // Always false.
# if(injectionSwitch.x > injectionSwitch.y)
# {
# _GLF_color = atanh(vec4(_float_1_0));
# }
# do
# {
# _GLF_color = vec4(_float_1_0);
# }
# while(gl_FragCoord.x < _float_0_0);
# }
# while(injectionSwitch.x > injectionSwitch.y);
#
# // The last value of red is chosen during the last iteration.
# _GLF_color = vec4[4](vec4(_int_0), vec4(_int_0), vec4(_int_0), vec4(_int_1, _int_0, _int_0, _int_1))[i];
# }
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 10
; Bound: 129
; Schema: 0
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %4 "main" %27 %79
OpExecutionMode %4 OriginUpperLeft
OpSource ESSL 320
OpName %4 "main"
OpName %8 "buf2"
OpMemberName %8 0 "injectionSwitch"
OpName %10 ""
OpName %27 "_GLF_color"
OpName %30 "buf0"
OpMemberName %30 0 "_GLF_uniform_float_values"
OpName %32 ""
OpName %40 "buf1"
OpMemberName %40 0 "_GLF_uniform_int_values"
OpName %42 ""
OpName %79 "gl_FragCoord"
OpName %122 "indexable"
OpMemberDecorate %8 0 Offset 0
OpDecorate %8 Block
OpDecorate %10 DescriptorSet 0
OpDecorate %10 Binding 2
OpDecorate %27 Location 0
OpDecorate %29 ArrayStride 16
OpMemberDecorate %30 0 Offset 0
OpDecorate %30 Block
OpDecorate %32 DescriptorSet 0
OpDecorate %32 Binding 0
OpDecorate %39 ArrayStride 16
OpMemberDecorate %40 0 Offset 0
OpDecorate %40 Block
OpDecorate %42 DescriptorSet 0
OpDecorate %42 Binding 1
OpDecorate %79 BuiltIn FragCoord
%2 = OpTypeVoid
%3 = OpTypeFunction %2
%6 = OpTypeFloat 32
%7 = OpTypeVector %6 2
%8 = OpTypeStruct %7
%9 = OpTypePointer Uniform %8
%10 = OpVariable %9 Uniform
%11 = OpTypeInt 32 1
%12 = OpConstant %11 0
%13 = OpTypeInt 32 0
%14 = OpConstant %13 0
%15 = OpTypePointer Uniform %6
%18 = OpConstant %13 1
%21 = OpTypeBool
%25 = OpTypeVector %6 4
%26 = OpTypePointer Output %25
%27 = OpVariable %26 Output
%28 = OpConstant %13 2
%29 = OpTypeArray %6 %28
%30 = OpTypeStruct %29
%31 = OpTypePointer Uniform %30
%32 = OpVariable %31 Uniform
%38 = OpConstant %13 3
%39 = OpTypeArray %11 %38
%40 = OpTypeStruct %39
%41 = OpTypePointer Uniform %40
%42 = OpVariable %41 Uniform
%43 = OpConstant %11 1
%44 = OpTypePointer Uniform %11
%78 = OpTypePointer Input %25
%79 = OpVariable %78 Input
%80 = OpTypePointer Input %6
%103 = OpConstant %11 2
%117 = OpConstant %13 4
%118 = OpTypeArray %25 %117
%121 = OpTypePointer Function %118
%123 = OpTypePointer Function %25
%4 = OpFunction %2 None %3
%5 = OpLabel
%122 = OpVariable %121 Function
%16 = OpAccessChain %15 %10 %12 %14
%17 = OpLoad %6 %16
%19 = OpAccessChain %15 %10 %12 %18
%20 = OpLoad %6 %19
%22 = OpFOrdGreaterThan %21 %17 %20
OpSelectionMerge %24 None
OpBranchConditional %22 %23 %24
%23 = OpLabel
%33 = OpAccessChain %15 %32 %12 %12
%34 = OpLoad %6 %33
%35 = OpCompositeConstruct %25 %34 %34 %34 %34
OpStore %27 %35
OpBranch %24
%24 = OpLabel
%45 = OpAccessChain %44 %42 %12 %43
%46 = OpLoad %11 %45
OpBranch %47
%47 = OpLabel
%128 = OpPhi %11 %46 %24 %127 %50
%53 = OpAccessChain %44 %42 %12 %12
%54 = OpLoad %11 %53
%55 = OpSLessThan %21 %128 %54
OpLoopMerge %49 %50 None
OpBranchConditional %55 %48 %49
%48 = OpLabel
OpBranch %56
%56 = OpLabel
OpLoopMerge %58 %59 None
OpBranch %57
%57 = OpLabel
OpSelectionMerge %66 None
OpBranchConditional %22 %65 %66
%65 = OpLabel
%67 = OpAccessChain %15 %32 %12 %12
%68 = OpLoad %6 %67
%69 = OpCompositeConstruct %25 %68 %68 %68 %68
%70 = OpExtInst %25 %1 Atanh %69
OpStore %27 %70
OpBranch %66
%66 = OpLabel
OpBranch %71
%71 = OpLabel
%75 = OpAccessChain %15 %32 %12 %12
%76 = OpLoad %6 %75
%77 = OpCompositeConstruct %25 %76 %76 %76 %76
OpStore %27 %77
%81 = OpAccessChain %80 %79 %14
%82 = OpLoad %6 %81
%83 = OpAccessChain %15 %32 %12 %43
%84 = OpLoad %6 %83
%85 = OpFOrdLessThan %21 %82 %84
OpLoopMerge %73 %71 None
OpBranchConditional %85 %71 %73
%73 = OpLabel
OpBranch %59
%59 = OpLabel
OpBranchConditional %22 %56 %58
%58 = OpLabel
%93 = OpConvertSToF %6 %46
%94 = OpCompositeConstruct %25 %93 %93 %93 %93
%104 = OpAccessChain %44 %42 %12 %103
%105 = OpLoad %11 %104
%106 = OpConvertSToF %6 %105
%116 = OpCompositeConstruct %25 %106 %93 %93 %106
%119 = OpCompositeConstruct %118 %94 %94 %94 %116
OpStore %122 %119
%124 = OpAccessChain %123 %122 %128
%125 = OpLoad %25 %124
OpStore %27 %125
OpBranch %50
%50 = OpLabel
%127 = OpIAdd %11 %128 %43
OpBranch %47
%49 = OpLabel
OpReturn
OpFunctionEnd
END
# uniforms for variant
# injectionSwitch
BUFFER variant_injectionSwitch DATA_TYPE vec2<float> STD140 DATA
0.0 1.0
END
# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
4 0 1
END
# _GLF_uniform_float_values
BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
1.0 0.0
END
BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
PIPELINE graphics variant_pipeline
ATTACH variant_vertex_shader
ATTACH variant_fragment_shader
FRAMEBUFFER_SIZE 32 32
BIND BUFFER variant_framebuffer AS color LOCATION 0
BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 2
BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1
BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 0
END
CLEAR_COLOR variant_pipeline 0 0 0 255
CLEAR variant_pipeline
RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 32 32
EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255
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